.lunbo img {
    height: 200px;
    width: 100%;
}

.lunbo {
    height: 200px;

}

.lunbo-parent {
    height: 200px;
}

.dian::marker {
    color: red;
}

.yuandian {
    margin-top: -50px;
    display: flex;
    justify-content: center;
}

.yuandian li {
    margin: 5px;
}